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 These questions will help you to prepare the next exam. Try to answer them in your notebook:

1, What are the gametes? Describe the two types of gametes.

2. Explain the female reproductve system and all its components.

3. The male reproductive system: name the components and explain two of them.

4. Describe the fertilisation process, from the sexual intercourse until the fetus is formed.

5. Define the following terms: placenta - menstrual cycle - sex characteristics.

6. Define  pure substance and  mixture substance.

7. What is a solution? Name the componentes and write examples of solutions.

8. Name the separation techniques and expalin just one of them including an example.

9. Oxidation: explain the process and name the two types of oxidation (you do not need to explain them, only must be named).

10. Where does a chemical change occurs and what are the consequences? Give at least one example of chemical changes.



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